add HTTP DELETE method to http.rb
Merge pull request #14 from svoboda-jan/add_delete_http_method

add HTTP DELETE method to http.rb
make the XHR ajax object accesible
add get_header method to access headers from XHR object: response.get_header('x-header-name')
fix typo after changing function parameter name
Split opal files into opal dir
Fix Element#off when accepting a selector
Update changelog with recent commits
Merge branch 'add_access_to_xhr_object' of git://github.com/svoboda-jan/opal-jquery into svoboda-jan-add_access_to_xhr_object
Depreceate Document in favor of
Update Document change in changelog
Fix config.ru to work with current opal and opal-spec
Whitespace
Back-port a bunch of stuff form production code
Remove redundant calls to $()
Event#deafult_prevented? cannot be aliased

The function is replaced by jQuery at runtime, hence aliasing would mean
caching its value.
Include Enumerable, will rely on Element#each
v0.0.8
Depreceate $document.title and $document.title=
Introduce Element.document as wrapped document